Is there is a way to automatically convert arcs imported by a DXF file to vias in Altium. My design contains more than 1000 vias and it would take long time to manually place each via. I have been struggling with this issue for the last few week.
You can try using Edit - Paste Special - Paste Array in parts where the vias are placed in a linear pattern. It is still a lot of work but less effort than what it would take you to place the via one by one.
I don't know any other way unless you can develop a script.